The cover of the 1919 sheet music for "While Others are Building Castles in the Air I'll Build A Cottage for Two" had its title hand lettered in a wonderfully eccentric Art Nouveau serif design that typified the era.

Also typical of the time was the habit of various songwriters to come up with wordy titles. This particular one checks in at fourteen words. Nonetheless, the sheet music’s title inspired Air Castles JNL and its oblique counterpart.